https://www.debka.com/israel-weighs-reprisal-for-iranian-rocket-attack-on-freighter-in-context-of-us-gulf-ties/

Defense Minister Benny Gantz said it was his “initial assessment” that Iran was responsible. “The location of the ship in relatively close proximity to Iran indicates this,” he said

Confirmation of his allegation came on Sunday from Kayhan, a hawkish Iranian publication, which stated that “the attack on the Israeli ship was legitimate.”

Our sources report that the waters in the area are rife with Iranian Revolutionary Guards missile boats and they most likely fired the rockets at the Israeli cargo ship while it was en route from Saudi Arabia to Singapore. The blasts left holes above the waterline on both sides of the hull. (See attached picture.) There were no casualties.

Israeli government and army chiefs maintain that this attack cannot go without response, but they understand that serious consideration is called for since hitting back at Iran may generate accelerated Iranian counterattacks that may also draw in its proxies and allies in Lebanon, Syria, Iraq and the Gaza Strip. A wider confrontation may ensue with repercussions that would be hard to control.